Question
A mixture of milk and water measures 60 litres. It
contains 10% water. How much water should be added to it, so that the water may be 25%?Solution
Milk in mixture = 60 x 90% = 54 L Water in mixture = 60 x 10% = 6 L Let's assume that water is added in the mixture is x Liters. Now mixture is = (60 + x) After addition water = (60 + x) According to the question: (60 + x) x 75% = 54 60+ x = (54 × 100)/75 60+ x = 18 x 4 x=72-60  x = 12 Liters
The speed of sound is maximum in which of the following ?
Which one of the following physical quantities is the same for molecules of all gases at a given temperature?
Two identical metallic spheres are charged. One has +Q charge, the other –Q charge. They are connected by a conducting wire. After equilibrium:
...Two satellites are orbiting Earth at different altitudes. Satellite A is closer than Satellite B. Which of the following is correct regarding their spe...
Which of the following is a characteristic of the acids?
Organisms have been divided into how many kingdoms?
A conducting sphere of radius R carries a charge Q. If half of the charge is transferred to an identical uncharged sphere brought into contact and remov...
Which of the following is an example of storage leaves?
A car travels 150 kilometers in 3 hours. What is its average speed?
Which of the following is the correct term used to describe Graphite, Carbon and Diamonds?
Relevant for Exams:
